Isotropic thin PTCDA films on GaN(0001)
C. Ahrens, J. I. Flege, C. Jaye, D. A. Fischer, T. Schmidt and J. Falta Journal of Physics: Condensed Matter (2016) 28, 475003 https://doi.org/10.1088/0953-8984/28/47/475003 The growth of 3, 4, 9, 10-perylene [...] indicate that the molecules remain intact upon adsorption on the surface. Furthermore, no chemical shifts can be observed in the C 1 s and O 1 s core levels with progressing deposition of PTCDA, suggesting none